From 87838c82cf6848cf5dc4bc95a82c7b127c4a9d83 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Thu, 28 Feb 2019 20:01:17 +0100
Subject: compat/macros: move more macros to macros1

Actually `macros.hpp' should become a util header.
---
 compat/macros.hpp | 21 ---------------------
 compat/macros1.h  |  6 ++++++
 2 files changed, 6 insertions(+), 21 deletions(-)

diff --git a/compat/macros.hpp b/compat/macros.hpp
index 08be9b4a..497933cf 100644
--- a/compat/macros.hpp
+++ b/compat/macros.hpp
@@ -2,10 +2,6 @@
 
 #include "macros1.h"
 
-#ifdef __cplusplus
-
-// from now only C++
-
 #include <utility>
 #include <type_traits>
 
@@ -23,24 +19,7 @@ using remove_cvref_t = typename cxx20_compat::remove_cvref<t>::type;
 template<typename t>
 using to_const_ref_t = std::add_lvalue_reference_t<std::add_const_t<remove_cvref_t<t>>>;
 
-// causes ICE in Visual Studio 2017 Preview. the ICE was reported and they handle them seriously in due time.
-// the ICE is caused by decltype(auto) and const& return value
-//#define eval_once(expr) ([&]() -> decltype(auto) { static decltype(auto) ret___1132 = (expr); return (decltype(ret___1132) const&) ret___1132; }())
-
-#define eval_once(expr) eval_once2(expr, __COUNTER__)
-
-#define eval_once2(expr, ctr)                                       \
-    ([&] {                                                          \
-        [[maybe_unused]]                                            \
-        static auto PP_CAT(init, ctr) = (((void)(expr)), 0);  \
-    }())
-
 template<typename t>
 using cv_qualified = std::conditional_t<std::is_fundamental_v<remove_cvref_t<t>>,
                                         remove_cvref_t<t>,
                                         to_const_ref_t<t>>;
-
-#define progn(...) ([&]() -> decltype(auto) { __VA_ARGS__ }())
-
-// end c++-only macros
-#endif
diff --git a/compat/macros1.h b/compat/macros1.h
index b1137e63..5e3129d5 100644
--- a/compat/macros1.h
+++ b/compat/macros1.h
@@ -39,3 +39,9 @@
 #else
 #   define unreachable() do { __builtin_unreachable(); *(volatile int*)nullptr = 0; } while (0) /* NOLINT(clang-analyzer-core.NullDereference) */
 #endif
+
+#ifdef __cplusplus
+#   define progn(...) ([&]() -> decltype(auto) { __VA_ARGS__ }())
+#   define eval_once(expr) eval_once2(expr, __COUNTER__)
+#   define eval_once2(expr, ctr) ([&] { [[maybe_unused]] static auto init ## ctr = (((void)(expr)), 0); }())
+#endif
-- 
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